Joint structure of steel plate concrete structure

ABSTRACT

Although a steel plate concrete structure (SC structure) is generally provided with extremely excellent performance in view of the structure, in view of building operation, it is necessary to weld and joint SC steel plate units at a building site. It is an object of the invention to provide a mechanical joint structure of SC steel plate units comprising surface steel plates or surface steel plates and constituent members thereof by omitting field welding which has been needed conventionally in view of a building procedure. According to the invention, as a joint structure for achieving the above-described problem, there is provided a joint structure of a steel plate concrete structure, in which a joint member of an H type or an I type comprising a steel plate or steel bar is arranged at a position of riding over SC steel plate units and a stress produced at a surface steel plate of the SC steel plate unit is transmitted by concrete cast into a space of the SC steel plate unit after installing the SC steel plate unit.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] In the case of a steel plate concrete structure (SC structure) constituting a composite structure comprising surface steel plates arranged at a member of a building or a structure of a power generating facility, a facility for general industry, an office building, collective housings or the like at a predetermined space therebetween, concrete filled in the space and a reinforcing and anti-shifting mechanism of a stud or the like for integrating the both, the present invention relates to a joint structure of a horizontal direction joint, a vertical direction joint or the like of an SC steel plate unit comprising the surface steel plates or the surface steel plates and a constituent member thereof.

[0003] 2. DESCRIPTION OF THE RELATED ART

[0004] Conventionally, a steel plate concrete structure (SC structure) is a style of a structure having excellent yield strength and deformation performance in comparison with an existing reinforced concrete structure by integrating surface steel plates and concrete. Further, according to the SC structure, an SC steel plate constituting a surface steel plate can be used as a structural member used also as a temporary mold in casting concrete and therefore, reinforcing bars and a mold which are needed in the reinforced concrete structure, are dispensed with, a number of steps can significantly be reduced and shortening of a work time period can be expected.

[0005] Further, in building respective members of the SC structure, generally, an SC steel plate unit comprising surface steel plates and temporary steel for holding shapes thereof, is fabricated at a shop or a proximate fabrication site, thereafter, the unit is carried to and installed at a building site and assembled to a predetermined shape and the SC steel units are jointed by field welding.

[0006] Further, there is also carried out an operation of assembling SC steel plates directly at a building site and attaching the SC steel plates by welding the SC steel plates. At any rate, this is a style of structure manifesting necessary strength as a composite integral structure comprising surface steel plates and concrete by assembling and jointing surface steel plates by welding means, thereafter filling concrete to an inner side of the assemble and curing the concrete.

[0007] Further, other than jointing by the field welding, there is conceivable jointing means by jointing SC steel plate units or SC steel plates by bolts, however, the means is not realistic in view of the following points and poses a problem practically.

[0008] (1) An enormous amount of bolts need to fasten and a number of steps at a building site increases.

[0009] (2) When a wall thickness or the like is thin, operation from inner sides is difficult and bolts cannot be fastened.

[0010] (3) Heads of bolts are exposed to an outer side of a surface steel plate, which is not only conspicuous in view of outlook but also an effective volume of a space to be constituted is reduced.

[0011] As described above, although a steel plate concrete structure (SC structure) is generally provided with extremely excellent functions in view of the structure, in view of building operation, SC steel plate units need to be welded and jointed at a building site and therefore, there pose following problems to be resolved.

[0012]FIGS. 21 and 22 show examples of general jointing of conventional SC steel plate units by field welding.

[0013] (1) In order to joint SC steel plate units, it is necessary to carry out an enormous amount(welding length) of welding in site (portions of Y in FIGS. 21 and 22) and a number of steps at a building site increases.

[0014] (2) Joints of surface steel plates of units constituting an enormous amount are obliged to fabricate by welding in site and therefore, building performance is poor.

[0015] (3) According to welding in site, an excellent building environment similar to that in shop welding cannot be ensured, reliability is difficult to ensure and welding control over all the steps becomes indispensable for confirming a welding situation. Further, a number of steps for the welding control is added.

[0016] (4) Although butt welding is needed for firmly transmitting strengths of surface steel plates to be jointed each other, an interval of the portion to be welded and jointed, an accuracy in unevenness and the like are determined by accuracy of installing units and therefore, the accuracy becomes difficult to ensure.

[0017] (5) Although since units are welded and jointed, in view of building operation, an error caused by accuracy of installing respective units needs to absorb by field welding, there is a limit in a width of absorbing the error in the field welding. Particularly, when surface steel plates at a total of surroundings of units are jointed by field welding, the absorption becomes difficult.

[0018] (6) Reliability and building accuracy of field welding are dependent on the building environment and therefore, buildable days are limited by weather, or suitable curing is needed.

SUMMARY OF THE INVENTION

[0019] The invention provides a joint structure of SC steel plate units comprising surface steel plates or surface steel plates and constituent members thereof by omitting field welding which has been needed in view of a building procedure in the conventional technology while ensuring excellent properties of a steel plate concrete structure (SC structure). Further, leakage of concrete filled to an inner side of a joint portion from the joint portion, can firmly be prevented by providing a seal or the like to the point portion thereby enable to achieve a function as a mold frame.

[0020] According to the invention, as a joint structure for achieving the above-described object, as shown by FIG. 1 through FIG. 9. there is provided a joint structure of a steel plate concrete structure constituted such that a joint member of an H type or an I type comprising a steel plate or a steel bar or the like of a reinforcement bar or the like is arranged at a position riding over SC steel plate units to be jointed and stresses produced at a surface steel plate of the SC steel plate unit are transmitted by concrete cast after installing the SC steel plate unit.

[0021] Further, as shown by FIG. 10 through FIG. 12, there is provided a joint structure of a steel plate concrete structure constituted such that a joint member of an H type or an I type comprising steel plates with studs or the like is arranged at a position riding over SC steel plate units, the joint portion is covered and stresses produced at a surface steel plate of the SC steel plate unit are transmitted by concrete cast after installing the SC steel plate unit.

[0022] Further, as shown by FIG. 13 through FIG. 16, there is provided a joint structure of a steel plate concrete structure constituted such that SC steel plate units are jointed by stepped difference portions or recessed and projected portions formed at end portions thereof, the SC steel plate units are mechanically jointed by a connection piece of a bolt or the like from an outer side of the jointing portion and stresses produced at a surface steel plate of the SC steel plate unit are transmitted by concrete cast into a space of the SC steel plate unit after installing the SC steel plate unit.

[0023] Further, as shown by FIG. 17 through FIG. 20, there is provided a joint structure of a steel plate concrete structure constituted such that SC steel plate units each constituting a shape of a recessed and projected portion to constitute end portions thereof in a mesh shape, are arranged by integrating the recessed and projected portions of the SC steel plate units to each other and stresses produced at a surface plate of the SC steel plate unit are transmitted by concrete cast into a space of the SC steel plate unit.

BRIEF DESCRIPTION OF THE DRAWINGS

[0024]FIG. 1 illustrates a sectional view and a front view of a joint structure in a horizontal direction of a steel plate concrete structure constituted by connecting SC steel plate units and casting concrete after installing the SC steel plate units;

[0025]FIG. 2 illustrates sectional views and a front view of a joint structure in a vertical direction of a steel plate concrete structure;

[0026]FIG. 3 illustrates sectional views and a front view of a joint structure in a horizontal direction of a steel plate concrete structure according to other embodiment constituted by connecting SC steel plate units and casting concrete after installing the SC steel plate units;

[0027]FIG. 4 is an enlarged sectional view of a joint structure of a steel plate concrete structure;

[0028]FIG. 5 illustrates a sectional view and a front view of a joint structure of other embodiment in a vertical direction of a steel plate concrete structure;

[0029]FIG. 6 illustrates sectional views and a front view of a joint structure in a horizontal direction of a steel plate concrete structure of other embodiment constituted by connecting SC steel plate units and casting concrete after installing the SC steel plate units;

[0030]FIG. 7 illustrates a sectional view and a front view of a joint structure of other embodiment in a vertical direction of a steel plate concrete structure;

[0031]FIG. 8 is an enlarged sectional view of a joint structure in a horizontal direction of a steel plate concrete structure;

[0032]FIG. 9 is an enlarged sectional view of a joint structure in a vertical direction of a steel plate concrete structure;

[0033]FIG. 10 illustrates a sectional view and a front view of a joint structure in a horizontal direction of a steel plate concrete structure of other embodiment constituted by connecting SC steel plate units and casting concrete after installing the SC steel plate units;

[0034]FIG. 11A is an enlarged sectional view of a joint structure in a horizontal direction of a steel plate concrete structure and FIG. 11B is an enlarged sectional view of other embodiment of a joint structure in a horizontal direction of a steel plate concrete structure;

[0035]FIG. 12 illustrates a sectional view and a front view of a joint structure of other embodiment in a vertical direction of a steel plate concrete structure;

[0036]FIG. 13 is a sectional view of a joint structure in a horizontal direction of a steel plate concrete structure;

[0037]FIG. 14 illustrates a sectional view and a front view of a joint structure of other embodiment in a vertical direction of a steel plate concrete structure;

[0038]FIG. 15 is a sectional view of a joint structure in a horizontal direction of a steel plate concrete structure;

[0039]FIG. 16 illustrates a sectional view and a front view of a joint structure of other embodiment in a vertical direction of a steel plate concrete structure;

[0040]FIG. 17A is a sectional view taken along a line a-a of FIG. 18 and FIG. 17B is a sectional view taken along a line b-b of FIG. 18;

[0041]FIG. 18 is a sectional view of a joint structure in a horizontal direction of other embodiment of a steel plate concrete structure;

[0042]FIG. 19 illustrates sectional views of a joint structure of other embodiment in a horizontal direction of a steel plate concrete structure;

[0043]FIG. 20 is a sectional view of a joint structure of other embodiment in a horizontal direction of a steel plate concrete structure;

[0044]FIG. 21 illustrates a sectional view and a front view of a joint structure of a conventional example in a horizontal direction of a steel plate concrete structure; and

[0045]FIG. 22 illustrate a sectional view and a front view of a joint structure of a conventional example in a vertical direction of a steel plate concrete structure.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0046] (Embodiment 1)

[0047]FIG. 1 and FIG. 2 show an embodiment of a joint structure of a steel plate concrete structure according to the invention. Surface steel plates(hereinafter, referred to as SC steel plates according to embodiments) 1 and 2 are opposedly arranged to constitute a predetermined space A. Other SC steel plates 3 and 4 are arranged contiguously to end portions on one side of the SC steel plates 1 and 2. The SC steel plates 3 and 4 are also opposedly arranged to constitute the predetermined space A similar to the above-described. On respective rear face sides of the SC steel plates 1 through 4, a number of studs 5 through 8 are erected to a side of the space A at appropriate intervals to serve to reinforce and anti-shift the steel plate concrete structure.

[0048] Respective SC steel plate units are formed by the SC steel plates 1 and 2 and the SC steel plates 3 and 4 and connection steel plates 9 and 10 are arranged to dispose to ride over end portions of the SC steel plate units. Rear face sides of the connection steel plates 9 and 10 are connected to each other by a steel bar or steel plate 11 constituted by steel plate, a reinforcement bar or the like to serve to constitute an interval holding member for ensuring a width of the predetermined space A. Substantially a central portion of the steel bar or steel plate 11 of the space A formed by the SC steel plates 1 and 2 and the SC steel plates 3 and 4 opposed to each other, is arranged with steel plates 12 similar to the SC steel plates 1 through 4 in a direction substantially in parallel with the SC steel plates 1 through 4 and a number of studs are formed to erect to serve to reinforce and anti-shift the structure from surfaces thereof to the rear face sides of the SC steel plates 1 through 4.

[0049] A joint member of an H type or an I type is formed by the connection steel plates 9 and 10, the steel bar 11, the anti-shifting steel plate 12, the studs and the like. After installing the SC steel plate units to each other, concrete is cast to the space A. By casting the concrete, the SC steel plate units are integrated to each other and the in-plane stresses produced at the SC steel plates 1 through 4 of the SC steel plate units can be transmitted to each other.

[0050] Whereas FIG. 1, described above, shows a joint structure in the horizontal direction of the SC steel plate units, FIG. 2 shows a joint structure in a vertical direction thereof. Also in the case of the joint structure in the vertical direction, similar to the joint structure in the horizontal direction, SC steel plate units comprising SC steel plates 1′ through 4′, are connected by joint members comprising connection steel plates 9′ and 10′, a steel bar or steel plate 11′, anti-shifting steel plates 12′, studs and the like.

[0051] (Embodiment 2)

[0052]FIG. 3 shows other embodiment of a joint structure of a steel plate concrete structure according to the invention, similar to Embodiment 1, described above, there are arranged SC steel plates 13 and 14 having a predetermined interval A therebetween and other SC steel plates 15 and 16 having the predetermined interval A therebetween contiguously to end portions on one side of the SC steel plates 13 and 14. Therefore, the both members are arranged at positions opposed to each other.

[0053] Respective SC steel plate units are formed by the SC steel plates 13 and 14 and the SC steel plates 15 and 16 and connection steel plates 17 and 18 are arranged to ride over end portions of the SC steel plate units at the positions opposed to each other. Rear face sides of the connection steel plates 17 and 18 are connected to each other by a steel plate 19 to form a joint member. Further, the joint member also serves to constitute an interval holding member for ensuring a width of the predetermined space A.

[0054] As shown by an enlarged sectional view of FIG. 4, the steel plate 19 is formed with a pertinent number of pieces of projections 20 serving to reinforce and anti-shift the structure to project from two faces thereof toward the space A.

[0055] A joint member is formed by the connection steel plates 17 and 18, the steel plate 19 for connecting the connection steel plates 17 and 18 to each other and the projections 20 and is previously formed integrally to constitute a joint member of an H type or an I type having a shape shown by FIG. 3 and FIG. 4 by welding or the like at a shop or the like and by attaching the joint member between the SC steel plate units at a building site, the joint structure is formed and the SC steel plate units are connected to each other. Thereafter, by casting concrete into the space A, the SC steel plate units are integrated, integrity with concrete is ensured and stresses can be transmitted to each other.

[0056] Whereas FIG. 3, described above, shows the joint structure in the horizontal direction of the SC steel plate units, FIG. 5 shows a joint structure in a vertical direction thereof. Also in the case of the joint structure in the vertical direction, similar to the joint structure in the horizontal direction, SC steel plate units comprising SC steel plates 13′ through 16′, are connected by a joint member comprising connection steel plates 17′ and 18′, a steel plate 19′ and steel bars or the like 20′ having fixing bolts and fixing portions and the like.

[0057] (Embodiment 3)

[0058]FIG. 6 shows other embodiment of a joint structure of a steel plate concrete structure according to the invention and similar to Embodiments 1 and 2, described above, there are arranged SC steel plates 21 and 22 having a predetermined space A therebetween and other SC steel plates 23 and 24 having the predetermined space A therebetween contiguously to end portions on one side of the SC steel plates 21 and 22. Therefore, the both members are arranged at positions opposed to each other.

[0059] Respective SC steel plate units are formed by the SC steel plates 21 and 22 and the SC steel plates 23 and 24 and connection steel plates 25 and 26 are arranged to ride over end portions of the SC steel plate units at the positions opposed to each other. Rear face sides of the connection steel plates 25 and 26 are connected to each other by a steel bar or steel plate 27 to thereby form a joint member. Further, the joint member also serves to constitute an interval holding member for ensuring a width of the predetermined space A.

[0060] At a substantially central portion of the steel bar or steel plate 27, as shown by FIG. 6, steel plates 28 are formed from both faces thereof in a direction substantially in parallel with the SC steel plates 21 through 24 and the steel plates 28 are formed with a number of steel bars 29 having fixing bolts and fixing portions in a cylindrical shape to serve to reinforce and anti-shift the structure from surfaces thereof toward rear face sides of the SC steel plates 21 through 24.

[0061] A joint member is formed by the connection steel plates 25 and 26, the steel bar or steel plate 27 for connecting the connection steel plates 25 and 26 to each other and the cylindrical projections 29 and a joint structure is formed by constituting a joint member of an H type or an I type by integrally forming the joint member having a shape shown by FIG. 6 previously by welding or the like at a shop or the like and attaching the joint member between the SC steel plate units at a building site to thereby connect the SC steel plate units to each other. Thereafter, the SC steel plate units are integrated by casting concrete into the space A, integrity with concrete is ensured and stresses can be transmitted to each other.

[0062] Whereas FIG. 6 shows the joint structure in the horizontal direction of the SC steel plate units, FIG. 7 shows a joint structure in a vertical direction thereof. Also in the case of the joint structure in the vertical direction, similar to the joint structure in the horizontal direction, SC steel plate units comprising SC steel plates 21′ through 24′, are connected by a joint member comprising connection steel plates 25′ and 26′, a steel bar or steel plate 27′ and cylindrical projections 29′ and the like.

[0063] (Embodiment 4)

[0064]FIG. 8 shows other embodiment of a joint structure of a steel plate concrete structure according to the invention and similar to Embodiments 1 through 3, described above, there are arranged SC steel plates 31 and 32 having a predetermined space A therebetween and other SC steel plates 33 and 34 having the predetermined space A therebetween contiguously to end portions on one side of the SC steel plates 31 and 32. Therefore, the both members are arranged at positions opposed to each other.

[0065] Respective SC steel plate units are formed by the SC steel plates 31 and 32 and the SC steel plates 33 and 34 and connection steel plates 35 and 36 are arranged to ride over end portions of the steel plate units at the positions opposed to each other. Rear face sides of the connection steel plates 35 and 36 are connected to each other by a steel bar or steel plate 37 to thereby form a joint member. Further, the joint member serves to constitute an interval holding member for ensuring a width of the predetermined space A.

[0066] The steel bar or steel plate 37 of the joint portion is arranged with steel plates 38 similar to the SC steel plates 31 through 34 in a direction substantially in parallel with the SC steel plates 31 through 34 and a number of studs 39 serving to reinforce and anti-shift the structure are formed from surfaces thereof toward rear face sides of the SC steel plates 31 through 34. The embodiment is adopted when the interval of the space A is wide or when the joint portion is intended to connect further solidly and the steel plates 38 are formed to project respectively at two portions on respective sides of the SC steel plate units. As described above, a pertinent number thereof can be provided as necessary and also a structure having a predetermined thickness or a large section can be dealt with thereby. Similar to Embodiments 1 through 3, described above, by casting concrete to the space A, in-plane stresses produced at the SC steel plates can effectively be transmitted.

[0067] Whereas FIG. 8 shows the joint structure in the horizontal direction of the SC steel plate units, FIG. 9 shows a joint structure in a vertical direction thereof. Also in the case of the joint structure in the vertical direction, similar to the joint structure in the horizontal direction, SC steel plate units comprising steel plates 31′ through 34′ are connected by a joint member comprising connection steel plates 35′ and 36′, a steel bar or steel plate 37′, steel plates 38′ projected from the steel plates 37′ and studs 39′ for serving to reinforce and anti-shift the structure projected from surfaces thereof and the like.

[0068] The joint metal pieces shown in FIG. 1 through FIG. 9, not only achieve a function for fixing the SC steel plates or steel bars of reinforcement bars or the like to dispose to ride over the SC steel plate units to be jointed but also can constitute guides in installing the SC steel plate units by installing the joint metal pieces prior to installing the SC steel plate units.

[0069] Further, by constituting a positional relationship between the joint metal piece and the SC steel plates by an arrangement shown in the enlarged sectional view of FIG. 4, the SC steel plate units can be jointed by easily absorbing an error in accuracy of fabricating the SC steel plate units, a shift in installing the joint metal piece or the like.

[0070] By the above-described constitution, the SC steel plate units comprising the SC steel plates or the SC steel plates and constituent members thereof can mechanically be jointed with no need of field welding which is necessarily needed conventionally in view of a building procedure while ensuring excellent functions of the SC steel plates.

[0071] (Embodiment 5)

[0072] Other than the above-described joint structures, also by a constitution of a joint member, described below, SC steel plate units comprising SC steel plates or SC steel plates and constituent members thereof can be jointed with no need of field welding.

[0073]FIG. 10 shows other embodiment of a joint structure of a steel plate concrete structure according to the invention. SC steel plates 41 and 42 are opposedly arranged to provide a predetermined space A therebetween. Other SC steel plates 43 and 44 are arranged contiguously to end portions on one side of the SC steel plates 41 and 42. Also the SC steel plates 43 and 44 are opposedly arranged to provide the predetermined space A therebetween similar to the above-described. A number of studs 45 through 48 are erected into the space A at respective rear face sides of the SC steel plates 41 through 44 to serve to reinforce and anti-shift the steel plate concrete structure.

[0074] Respective SC steel plate units are formed by the SC steel plates 41 and 42 and the SC steel plates 43 and 44 and the connection metal pieces 49 and 50 in a strip-like shape are arranged to dispose to ride over end portions of the SC steel plate units. As shown by an enlarged sectional view of FIG. 11A, on rear face sides of the connection metal pieces 49 and 50, there are formed to erect a pertinent number of studs 51 and 52 constituting a reinforcing and anti-shifting mechanism. The connection metal pieces 49 and 50 in the strip-like shape are arranged on outer sides of the SC steel plate units to ride over the SC steel plate units to be jointed, the studs 51 and 52 are respectively penetrated into the space A from holes 53, 54, 55 and 56 previously provided at the SC steel plates 41 through 44 and thereafter integrated by concrete to be cast. By casting the concrete, stresses produced in the SC steel plates can be transmitted to each other.

[0075] The holes 53 through 56 previously provided at the SC steel plates 41 through 44, are previously formed to be pertinently large and therefore, in installing the connection metal pieces 49 and 50, even when an error in view of member or in view of building operation is caused, the error constitutes an amount of clearance and the connection metal pieces 49 and 50 can be attached by easily absorbing the error. Further, the SC steel plate units can easily be attached to each other only by inserting the studs 51 and 52 of the connection metal pieces 49 and 50 from outer sides of the joint portion into the space A with no need for providing special means on an inner side of the space A.

[0076] Whereas FIG. 10 shows the joint structure in the horizontal direction of the SC steel plate units, FIG. 12 shows a joint structure in a vertical direction thereof. Also in the case of the joint structure in the vertical direction, similar to the joint structure in the horizontal direction, SC steel plate units comprising SC steel plates 41′ through 44′, are connected by a joint member comprising connection metal pieces 49′ and 50′ and studs 51′ and 52′ projected from the connection metal pieces 49′ and 50′ for serving to reinforce and anti-shift the structure.

[0077] Further, as shown by FIG. 11B, the studs 51 and 52 formed at end portion sides of the steel plates 41 through 44, are penetrated directly from the holes 53 through 56 provided at other end portions of other steel plates 41 through 44 and the steel plates are integrated by casting concrete thereafter. Therefore, steel plates overlap at end portions thereof.

[0078] In FIG. 11B, the studs and the holes formed at the end portions are connected by reversing a positional relationship thereof in the steel plates 41 and 42 and the steel plates 43 and 44 opposed to each other.

[0079] (Embodiment 6)

[0080]FIG. 13 shows other embodiment of a joint structure of a steel plate concrete structure according to the invention.

[0081] As shown by FIG. 13, SC steel plate 61 and 62 are opposedly arranged to provide a predetermined space A therebetween. Other SC steel plates 63 and 64 are arranged contiguously to end portions on one side of the SC steel plates 61 and 62. Also the SC steel plates 63 and 64 are opposedly arranged to provide the predetermined space A therebetween similar to the above-described. On respective rear face sides of the SC steel plates 61 through 64, a number of studs 65 through 68 are erected into the space A respectively at pertinent intervals to thereby serve to reinforce and anti-shift the steel plate concrete structure.

[0082] At an end portion of the SC steel plate units constituted by the SC steel plates 61 and 62 and studs 65 and 66, there is formed a jointing portion 69 in a shape having recess and projection, meanwhile, also at an end portion of the SC steel plate unit constituted by the SC steel plates 63 and 64 and the studs 67 and 68, there is formed a jointing portion 70 in a shape having recess and projection coinciding with the jointing portion 69. The jointing portions 69 and 70 are mechanically jointed by combining and arranging the joint portions 69 and 70 at the end portions of the SC steel plate units and penetrating and fixing the jointing portions by using a steel bar 71 of a through bolt style or the like from an outer side of the jointing portions to a position on the opposed side.

[0083] Similar to Embodiment 5, described above, by forming holes previously provided at the SC steel plates 61 through 64 to be large previously, there is constituted an amount of clearance of an error of a member or in building operation in attaching operation and the SC steel plate units can be attached by easily absorbing the error. Further, the SC steel plate units can easily be attached only by penetrating and fixing the steel bar 71 or the like from the outer side of the joint portions without providing special means on an inner side of the space A.

[0084] Further, by fixing the joint portions including the steel bar 71 or the like by concrete at a shop or the like and thereafter carrying the joint portions to a building site, not only the shape of the SC steel plate units can easily be maintained but also the SC steel plate units can be jointed by bolts prior to casting concrete into the space A. Further, by contiguously forming the SC steel plates 61 and 62 on front face and rear face sides of the SC steel plate unit, the space A can be made to constitute the closed space A and concrete cast to the inner side can be prevented from being leaked to outside.

[0085] Whereas FIG. 13 shows the joint structure in the horizontal direction of the SC steel plate units, FIG. 14 shows a joint structure in a vertical direction thereof. Also in the case of the joint structure in the vertical direction, similar to the joint structure in the horizontal direction, SC steel plate units comprising SC steel plates 61′ through 64′, are connected by a joint member comprising jointing portions 69′ and 70′ and a connection steel bar 71′ and the like.

[0086] Joint portions shown in FIGS. 15 and 16 show constitutions constructing structures of the joint portions by structures in each of which the above-described structure is devoid of one side thereof.

[0087] (Embodiment 7)

[0088]FIGS. 17A and 17B show other embodiment of a joint structure of a steel plate concrete structure according to the invention.

[0089] As shown by FIGS. 17A and 17B, SC steel plates 81 and 82 are opposedly arranged to provide a predetermined space A therebetween. Other SC steel plates 83 and 84 are arranged contiguously to end portions on one side of the SC steel plates 81 and 82. Also the SC steel plates 83 and 84 are opposedly arranged to provide the predetermined space A therebetween similar to the above-described. On respective rear face sides of the SC steel plates 81 through 84, a number of studs 85 through 88 are erected into the space A respectively at pertinent intervals to serve to reinforce and anti-shift the steel plate concrete structure.

[0090] As shown by FIG. 17A, an end portion of an SC steel plate unit constituted by the SC steel plates 81 and 82 and the studs 85 and 86, is integrally formed with a jointing portion 89 having a shape for constituting a semicircular or square shape, meanwhile, an end portion of an SC steel plate unit constituted by the steel plates 83 and 84 and studs 87 and 88, is formed with an opening portion 90 to be inserted with the jointing portion 89.

[0091] The jointing portions 89 and opening portions 90 are alternately formed in the SC steel plate units, for example, in FIG. 17A, as described above, the jointing portion 89 is formed at the end portion of the SC steel plate unit on the left side and the end portion of the SC steel plate unit on the right side is formed with the opening portion 90, however, in FIG. 17B, positions of the jointing portion 89 and the opening portion 90 are reversed.

[0092] As shown by FIG. 18, the jointing portions 89 are formed to project alternately and intermittently in the left and right SC steel plate units at pertinent intervals in a vertical direction. The jointing portion 89 is integrated to end portions of the SC steel plates 81 and 82 or the SC steel plates 83 and 84 by welding previously at a shop or the like. Further, a predetermined number of studs 91 are erected from a surface of the projected portion constituting the semicircular or square shape.

[0093]FIG. 18 shows a view of arranging the jointing portions 89 and the opening portions 90 in mesh with each other to install at a building site and inserting a reinforcement member of a reinforcement bar cage 92 or the like into the portion after the mesh operation. FIGS. 19 and 20 show a sectional view and a front view of a state of connecting the SC steel plate units to each other. After combining and connecting the SC steel plate units, concrete is cast to the space A.

[0094] Tensile force produced at the joint portion of the SC steel plates is converted into bearing force of the concrete surrounded by steel plates at end portions of projected portions constituting the semicircular or square shape and is easily transmitted to respective members. Most of compressive force produced at the joint portion of the SC steel plates can sufficiently be transmitted as compressive force of the concrete. Further, shear force operated by bearing force of the steel plates at the both end portions, can be transmitted by arranging bars similar to those of a pillar having a general reinforced concrete structure as necessary.

[0095] According to the invention, it is not necessary to weld to joint SC steel plate units or surface steel plates at a building site and therefore, the following effects are achieved, significant promotion of building performance and economic performance can be realized and the invention is applicable to various steel plate concrete structures (SC structures). Specific effects thereof are as described below.

[0096] (1) An enormous amount (welding length) of field welding is dispensed with and a number of steps at a building site is considerably reduced.

[0097] (2) A joint of surface steel plates of units constituting an enormous amount of welding according to the conventional technology, becomes a mechanical joint and building performance is considerably improved.

[0098] (3) All of welding necessary for attaching SC steel plate units, is carried out by welding at a shop and therefore, reliability is promoted. Further, special welding control for confirming a welding situation at a site is dispensed with and a number of steps at a building site for welding control is considerably reduced.

[0099] (4) Building performance is remarkably promoted by facilitating to absorb errors of an error caused by installing accuracy in an interval of SC steel plate units, unevenness or the like.

[0100] (5) Buildable days are not limited by weather and special curing is not needed. 

What is claimed is:
 1. A joint structure of a steel plate concrete structure, wherein a joint member of an H type or an I type comprising a steel plate or steel bar is arranged at a position of riding over SC steel plate units and a stress produced at a surface steel plate of the SC steel plate unit is transmitted by a concrete cast into a space of the SC steel plate unit after installing the SC steel plate unit.
 2. The joint structure of a steel plate concrete structure according to claim 1: wherein a steel plate formed with a pertinent number of pieces of studs is formed to project to a portion of the space substantially at a central portion of a member for constituting a web of the joint member.
 3. The joint structure of a steel plate concrete structure according to claim 1: wherein a pertinent number of pieces of projections are formed at a member of constituting a web of a joint member.
 4. The joint structure of a steel plate concrete structure according to claim 1: wherein a steel plate formed with a pertinent number of pieces of cylindrical projections is formed to project to a portion of the space substantially at a center portion of a member for constituting a web of a joint member.
 5. The joint structure of a steel plate concrete structure according to claim 1: wherein a plurality of pieces of steel plates each formed with a pertinent number of pieces of studs or cylindrical projections are formed to project to a portion of the space at a member for constituting a web of a joint member.
 6. A joint structure of a steel plate concrete structure, wherein a joint member comprising a steel plate with a stud is arranged at a position of riding over SC steel plate units, the joint portion is covered and a stress produced at a surface steel plate of the SC steel plate unit is transmitted by a concrete cast into a space of the SC steel plate unit after installing the SC steel plate unit.
 7. A joint structure of a steel plate concrete structure, wherein SC steel plate units are jointed by stepped difference portions or recessed and projected portions formed at end portions thereof, the SC steel plate units are mechanically jointed by a connection piece of a bolt or the like from an outer side of the joint portion and a stress produced at a surface plate of the SC steel plate unit is transmitted by a concrete cast into a space of the SC steel plate unit after installing the SC steel plate unit.
 8. A joint structure of a steel plate concrete structure, wherein SC steel plate units constituting a recessed and projected shape to constitute end portions thereof in a mesh shape, are arranged by integrating the recessed and projected portions of the SC steel plate units to each other and a stress produced at a surface steel plate of the SC steel plate unit is transmitted by a concrete cast into a space of the SC steel plate unit. 